Trolley-harp.



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TRUllEY HARP.

APWQAHQN min Mm mw.

511 va y1 1y tot TYOY C. Snow/ALTER UNITED STATES PATENT OFFICE.

ROY C. BHOWALTER, F ALTOONA, PENNSYLVANIA, ASSIGNOR 0F 0NE-THIRD T0 JOHN P. REILLY AND ONE-THIRD T0 K.

THIEME, BOTH OF ALTOONA, PENNSYL- VANIA.

TROLLEYHARP- 1,202,233. Specification 0f Letters Patent .Patented dirt. 24, 1916.

Application tiled January 25, 1916. Serial No. 74,198`

0 all whom it may concern Be it known that I, Rov C. Suowzu/run, a citizen of the Umted States, residing at Altoona, in the county ot Blau' and State of Pennsvlvania, have invented 'certain new c and useful Improvements in 'l rolley-I-larps,

of which the following is a specification.

This invention relatesto trolley systems and has particular reference lo the manner in whichthe current is collected from the trolley Wire, a`ft`er which it [lows to the motors and thence to the rails.

The primary object of this invention is to provide an improved trolley harp, and harp,

mounting device, whereby the usual wear that. is now takenby the trolley wheel and trolley wire is greatly reduced, thus inanifestly saving replacements of trolley wheels or current collectors, as well as greatly prolonging the life of the conducting wire.

'Another object of the device is to provide novel and compact means whereby the trolley wheelis enabled to follow the wire around curves and crossovers, without leaving the wire or scraping along the Same.

A still further object of the device is to provide additional removable current collecting devices which not only facilitate in the current collection, but provide adequate lneanswhereby these devices can be readily taken off and replaced, thus increasing the life of the harp in a very practica] way.

A still further object of the device is to provide a trolley harp, with a trolley harp support designed in such manner that the shank of the trolley harp envelops a portion of the harp support in such a manner as to make arcing between the harp and the harp support impossible, while at the same time providing means for allowing the harp to slightly rotate on the support, thus increasing the tension on a resilient element so designed and positioned as to hold the harp yieldingly against the support.

With these aiid many other objects in view, which will be more readily apparent as the nature of the invention is better understood, the same consists of the novel construction, combination and arrangement ci? parts as will be hereinafter fully pointed out, illustrated and claime It will be quite readily understoo`d by those skilled in the art to which thisn be longs, thatthe invention is susceptible to some structural modification4 and changes f is adapted to receive a resilient Without departing from tbc spirit or scope of the invention, but a preferred and prac tical enilwdimeut there-oi' ir .shown in the accompanying drawings. in willich-4- Figure l shows my impl-:rrd device in its relation to thi,l trolley; uhr-l y,uil trolley wire. Fig. 2 shows a sifli.- view of the trolley harp support and cli-ii E; .lia-itratcs the manner of forming thi hriwreu the harp and the yharp sul'ipm. iig. I Ibows an end View of the parts shown in Fi hig. 4 iS a` plan view oi' the ioiga ii harp, Showing the additional renovable cru-rent collecting devices positions-l on either side of the harp, as well as showing the meanswith which the harp cooperates with he harp support. Fig. 5 is a side elevation oh the parts shown in Fig. 4. Vig. is au cnil view of the harp shank showing more clearly thc harp support. Fig. 7 is an edge view of one of the removable waslwrs, which bear against the hub of the trolley wheel and assist in collecting the current. Fig. 8 is an elevational view of the parts shownin Fig. 7.

Like reference numerals refer to similar parts throughout the several figures of the drawings.

In carrying out this invention no change is contemplated in the usual trolley wheel or wheel axle. and to this end I provide a trolley wheel harp designated by the numeral 10, having spaced jaw arms 11, to which are attached yieldable metal strips 12, preferably brass, through the medium of rivets 13 or similar means.

The brass strips 12 are each provided with a removable trolley wheel hub bearing washer 14, adapted to e firmly secured to the brass strips 12, through an angled engaging ledge 15, which is designed to pass through a perforation in the brass strips 12, and afterward bent downward as shown in order to prevent rotation with the trolley wheel hub.

The shank 16 of the trolley harp is preferably provided with an axial openin of three diameters, the first 17, of whic is adapted to receive the end 18 of the trolley wheel arp support, while the portion 19 receives the stem 20 of the harp support.

The diameter 21 provides a socket which element 22, which envelops the stem20 and has sullicient room for lits free movement ',A shouldered abutment 23 acts as a stop or rest for one end of the spring 22, while the opposite end 24, is designed to bear against the face 25 ot' the tension adjusting nut 36.

lt will be obvious from the construction that any rotation ,of the harp 10, with reference to the harp support, will be resisted by the resilient element 22, since the irregular surfaces 26 and 2G" are lirmly held. to grther through the action of the spring.

'l`he irregular surfaces 26 and 26 are preferably made ih the shape of teeth in the edge of end 1H ot' the support as well as in the peripheral edge of the mouth of the opening,r 1f) in the shank iii, als clearly shown in the, drawings,

For the purpose ot' limiting the rotary movement or play ot the harp with reference to the harp support permitted by the faces 2G and 26 and the spring :12, there is psw vided a perforated ear 2i' which, when the parts are assembled as shown in Fig. il., efr gages the opl'iosite sides '2.8 of `the [uncino portion N of the trolley harp shank. thu tation is restricted to the amount o found sutlicient in street railway pracr! The ear 27 is perforated for the pum of permitting;r the attachment ot' the tiogv rope, which is used to place the trolley "nivel upon the wire as well asto remove the From the above description it is br that the many advantages ot' the herr scribed trolley wheel harp and harp manE ing will be readily apparent without further elaboration and iVhat I claim and desire to be secured by Letters Patent is- 1. In combination with a trolley harp, having,1r shank and jaw members, metallic strips secured to the inside faces of the jaw members, a removable wearing washer detachably secured to the free end of the said metallic strips and a shank having a plurality of inside diameters.

2. ln a device of the class described, the combination with a trolleyr pole of a trolley harp member having,r a shank portion provided with a plurality of different internal diameters, a harp support having a body member for engaging with said trolley pole and a stem of reduced diameter for fitting in said shank of the trolley harp and havmg a threaded end portion, said harp support also having a perforated ear depending therefrom, and means carried by th'e threaded end of the stem of said harp support for securingthe harp thereto.

3. In a device of the class described, the

combination with a trolley pole, of st trolley harp having; :i hollow shank, spaced jaw members, current collecting means carried by the jaw members, a harp support including a body portion having.r a socket for itting ovensaid trolley pole, and also having a reduced stein portion, the body oi' saidl slipport adjacent fhe reduced stem having a Atoothed portion, said toothed portion adapted to cooperate with a similar toothed por lion on the shank ot' the harp, a spring arranged within the shank oi the trolley harp and .surrouni[iupl the end of the. stem on the supportingr member.y and means carried by the end oi' said stem for tensioning: said Apriior and seein-iupIr the harp to its support. i. troliey harp comprising the eombination with a support includingr a body having! an end portion ot'. reduced diameter. and an irregular friction 'face formed :it'the junction of said end with the body oi" the support, a. @roller harp including a hollow shank adapti-d to lit over the end of said support, said haak having a portion adapted to receive ihr and of the body of the support, an' opposuspring socket portion, and interlocking portion adapted to receive the reduced end of the shank, a friction face formed between one end of said interlocking portion and the end of the shank which receives the body ot' the support, a spring arranged in said spring socket portion, and means secured to the end of the reduced end portion of the shank for causing said spring to ngiaintaiu the friction faces of the shank and support in engagement.

A trolley harp comprising the combination of a support having an end poi-tion of reduced diameter, the extremity of which is threaded. said support also having a friction face formed at the end of said reduced portion opposite the threads, and a rigid offset portion, a harp having;r a shank portion adapted to telescope the reduced end of the support and havin a friction face for matching,T with said riction face of the support, a nut for the threaded end of the snpport adapted to lock-'the harp thereto, said harp having a notch, the sides of which engage with said rigid projection of the support.

In testimony whereof I affix my signature in presence of two Witnesses.

ROY (i. SHOWALTER.

W itnesses ALEX. Wem, i N. F. Guarnieri. 

